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These technical reports detail the spraying technologies of PLASMA. Reports are provided at no charge. If you have any questions regarding these reports, please feel free to contact us. Copying and distribution of reports are prohibited without permission.

The effects of heat treatment on the mechanical properties of cold-sprayed coatings

Here, the effects of heat treatment conditions on the mechanical properties of the four cold-sprayed materials are discussed.

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Development of ultra-strong adhesive strength coatings using cold spray

Based on the present studies, an ultra-strong bonding (more than 200 MPa) between dissimilar materials has been developed with cold spray processing.

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On deposition of Waspaloy coatings by cold spray

The deposition of pore free and highly adhered Ni and Co superalloy coatings is of great interest for engine design and gas turbine applications, both in case of maintenance repair and overhaul operations as well for mechanical and chemical protection purposes in aeronautics and energy applications.

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A Study of Adhesive Strength of Cold Spray Coatings

This paper presents the adhesive strength results of copper and titanium deposits produced by cold spray processes on steel, stainless steel, aluminum and copper substrates.

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The Influence of Particle Morphology on In-flight Particle Velocity in Cold Spray

Cold spray is a relatively recent spray coating technology in which a metal or alloy particle is plastically deformed by the kinetic energy of the particle accelerated in supersonic gas flow through a convergence and divergence nozzle when it impinges onto the substrate.

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The Influence of Spray Conditions on Deposition Characteristics of Aluminum Coatings in Cold Spraying(ITS-2009)

In the cold spraying process, particle velocity and temperature are commonly regarded as the key factors that influence the deposition efficiency and properties of the coating. In this study, pure Al coatings were prepared under different working gas temperatures.

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Development of High Temperature Gas Heater in the Cold Spray Coating System(2009)

Cold spray coating has been studied since Dr. A. Papyrin discovered the process in the Russian Academy of Science in the mid-1980s. Cold spray technology would become utilized in various industrial fields in the foreseeable future because of easily obtaining metal deposits with certain mechanical and physical properties.

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Mathematical Modeling and Numerical Simulation of Splat Cooling in Plasma Spray Coatings(6 July 2009)

Particle deformation and cooling significantly affect the characteristics of thermally sprayed coatings, such as the adhesion and cohesion strength between a splat and a substrate and between splats, as well as the internal stresses of deposits.

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A Study on the Tensile Strength of Coatings Prepared by Cold Spray(M & M-2007-JSME)

In this study, Nickel, Aluminum and Copper coatings were deposited by Cold Spray process on three kinds of substrates, Al, Cu and Stainless Steel. The tensile strength of the coatings was tested and the hardness of the substrates was also measured.

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In-Flight Particle Velocity Measurements with DPV-2000 in Cold Spray(30 August 2006)

The measurements of in-flight particle velocities and deposition efficiency at cold spraying of two stainless 316L powders having different morphologyu and almost the same size distributions were carried out.

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Study on the Influences of DPV-2000 Software Parameters on the Measured Results in Cold Spray(ITS-2006)

The velocity of particles prior to the impact on the substrate surface is a very important factor that determines the deposition characteristics and coating quality in cold spray. The DPV-2000 system is an on-line diagnostic system that simultaneously measures the velocity, temperature and diameter of thermally sprayed particles.

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Study on the Influences of DPV-2000 Software Parameters on the Measured Results in Cold Spray(ATSC-2005)

The velocity of particles prior to impact on the substrate is the predominant determinant of deposition characteristics and coating quality in cold spray. DPV-2000 system is an on-line diagnostic system of in-flight particles, which can measure the temperature, velocity and size of the particles simultaneously.

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Effect of DPV-2000 software parameter on the measurement result of in-flight particles in cold spray(JTST-2005-spring)

The cold spray is a relatively recent coatings technology, where coating can be formed only the velocity of in-flight particles exceeds a critical velocity. Therefore, velocity is key factor to the cold spray. DPV-2000 system is increasing used to detect the velocity, temperature and diameter of the in-flight particles.

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Effect of Spray Angle on Deposition Characteristics in Cold Spraying(2003)

A typical feature of cold spray process is that a deposit can be formed without change of the original structure and compositions of spray materials. Only particles which reach the velocity higher than the critical velocity can be deposited on a substrate in cold spraying.

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Influence of Substrate Roughness and Temperature on Adnesive Strength in Thermal Spray(2003)

It is essential to undersotand and clarify what causes adhesive strength between the thermally sprayed deposit and the substrate.

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Characterization of roughened substrate surface on bond strength of thermal spray deposits(ITSC 2002)

It is well known that the adhesive strength of thermally sprayed coatings is greatly influenced by the roughness of topography of the roughened substrate conventionally obtained by grit blasting.

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Splat Formation in Off-Normal Angle Spray(May 8-11, 2000)

The thermal spray process in an off-normal angle spray has been little studied. Several studies on microstructure and mechanical properities of off-normal angle spray deposits have been reported.

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Mathematical Modeling of Flattening Porcess on Rough Surfaces in Thermal Spray(March 17-19, 1999)

This paper aims to clarify the molten particle derofmation in off-normal angle inpiningement under certain physical and mathematical assumptions.

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Mathematical Modeling of Flattening Porcess on Rough Surfaces in Thermal Spray(1996)

Thermal spray layers are formed on rough surfaces; however, the flattening process on rough surfaces has not yet been clarified. A mathematical flattening mocel which tekes into account the roughness of this paper.

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Behavior of Molten Droplets Impinging on Flat Surface(June 20-24, 1994)

An analytic model of the flattening process besed on assumptions considering both the particle deformation shape and flow field is presented.

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A Porosity Formation and Flattening Model of an Impinging Molten Particle(March 1994)

Thermal spray coatings have porosity; however, reasons for the production of prosity during the coating process are not known. This paper proposes a phisycal and mathematical model for the production of porosity by considering deformationof a molten particle during thermal spray coating processes.

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An Analysis of the Porosity Producing Mechanism(28 May 5 June 1992)

It is well known that thermal spray coatings have prosity, but the reason why the porosity is prucuced in thermal spray coating processes is not known.

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